POLAND_SPUD wrote:couldn't he just buy a brand new starting relay??
like this one -> http://www.spudfiles.com/forums/my-comp ... t,105.html
it attaches directly to the compressor and has an in-built overload protection... that would simplify wiring a lot
Depends on the compressor. Some need a starting cap. Some use a run cap. Using a relay only without a run cap if it was designed for it can overheat it quickly.
not sure which is + and which is - though
This is alternating current. The cap does not have a polarity. Connecting hot and neutral properly is important. The overload disconnects the hot. The hot feeds the Common on the motor. Start and run go through the start relay and any capacitors if any on either or both legs. Getting the start relay properly wired is critical.
See the refrigeration book mentioned earlier for more info. Start configurations vary.
Disclaimer; I did some refrigeration and AC work before the regulations went crazy. As a part timer, the costs for the recovery equipment, licensing, etc went through the roof. I no longer do AC work. Anyone want a partial bottle of R12?